1. Division of Clinical Epidemiology, Department of Medicin Solna; Karolinska Institutet; Stockholm Sweden
2. Department of Oncology and Pathology; Institute of Clinical Sciences, Lund University; Lund Sweden
3. Department of Hematology; South Älvsborg Hospital, Borås and Sahlgrenska Academy, Gothenburg University; Gothenburg Sweden
4. Department of Oncology; Akademiska University Hospital, Uppsala; Sweden
5. Division of Hematology, Deparment of Medicine Huddinge; Karolinska Institutet; Stockholm Sweden
6. Deparment of Research, Development & Education; Region Halland; Halmstad Sweden
7. Deparment of Medical Epidemiology and Biostatistics; Karolinska Institutet; Stockholm Sweden
8. Center for hematology, Karolinska University Hospital; Solna Sweden